Table 1.
Demographic and hospital characteristic between cementless and cemented TKA cases
| Cementless (4,870) |
Cemented (163,060) |
p-Value | |
|---|---|---|---|
| Mean age in years (standard deviation) |
63.51 (9.45) | 65.9 (9.5) | <0.001 |
| Women | 52.6% | 59.7% | <0.001 |
| Morbid obesity (BMI over 40 kg/m2) |
9.8% | 9.4% | 0.378 |
| Charlson-Deyo comorbidity |
|||
| 0 | 73.8% | 71.4% | |
| 1 | 20.1% | 20.2% | <0.001 |
| 2 | 4.6% | 6.4% | |
| 3 | 1.5% | 2.0% | |
| Bed size | |||
| Small | 28.1% | 28.6% | |
| Medium | 37.3% | 29.0% | <0.001 |
| Large | 34.6% | 42.4% | |
| Location/teaching status of hospital |
|||
| Rural | 10.0% | 10.1% | |
| Urban nonteaching | 30.8% | 32.2% | 0.103 |
| Urban teaching | 59.2% | 57.7% | |
| Race | |||
| White | 83.8% | 83.2% | |
| Black | 10.7% | 7.7% | |
| Hispanic | 3.1% | 5.1% | <0.001 |
| Asian or Pacific Islander | 0.7% | 1.6% | |
| Native American | 0.0% | 0.4% | |
| Other | 1.8% | 2.0% | |
| Region | |||
| Northeast | 29.1% | 17.1% | |
| Midwest | 23.7% | 29.4% | |
| South | 32.2% | 34.1% | <0.001 |
| West | 14.9% | 19.5% | |
| Primary payer | |||
| Medicare | 41.2% | 53.0% | |
| Medicaid | 5.8% | 3.5% | |
| Private insurance | 49.2% | 40.3% | |
| Self-pay | 0.5% | 0.5% | <0.001 |
| No charge | 0.0% | 0.0% |
Abbreviations: BMI, body mass index; TKA, total knee arthroplasty. Note: Statistically significant values appear in bold.